268422520321 has 2 divisors, whose sum is σ = 268422520322. Its totient is φ = 268422520320.

The previous prime is 268422520283. The next prime is 268422520339. The reversal of 268422520321 is 123025224862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230434561296 + 37987959025 = 480036^2 + 194905^2 .

It is a cyclic number.

It is not a de Polignac number, because 268422520321 - 2⁷ = 268422520193 is a prime.

It is not a weakly prime, because it can be changed into another prime (268422550321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134211260160 + 134211260161.

It is an arithmetic number, because the mean of its divisors is an integer number (134211260161).

Almost surely, 2^268422520321 is an apocalyptic number.

It is an amenable number.

268422520321 is a deficient number, since it is larger than the sum of its proper divisors (1).

268422520321 is an equidigital number, since it uses as much as digits as its factorization.

268422520321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 268422520321 in words is "two hundred sixty-eight billion, four hundred twenty-two million, five hundred twenty thousand, three hundred twenty-one".